netdev - Re: [PATCH net] mptcp: fix possible stall on recvmsg()

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Message-Id: <163370160761.24973.5860013311748951004.git-patchwork-notify@kernel.org>
Date:   Fri, 08 Oct 2021 14:00:07 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Mat Martineau <mathew.j.martineau@...ux.intel.com>
Cc:     netdev@...r.kernel.org, pabeni@...hat.com, davem@...emloft.net,
        kuba@...nel.org, matthieu.baerts@...sares.net,
        mptcp@...ts.linux.dev,
        syzbot+3360da629681aa0d22fe@...kaller.appspotmail.com
Subject: Re: [PATCH net] mptcp: fix possible stall on recvmsg()

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <davem@...emloft.net>:

On Thu,  7 Oct 2021 15:05:00 -0700 you wrote:
> From: Paolo Abeni <pabeni@...hat.com>
> 
> recvmsg() can enter an infinite loop if the caller provides the
> MSG_WAITALL, the data present in the receive queue is not sufficient to
> fulfill the request, and no more data is received by the peer.
> 
> When the above happens, mptcp_wait_data() will always return with
> no wait, as the MPTCP_DATA_READY flag checked by such function is
> set and never cleared in such code path.
> 
> [...]

Here is the summary with links:
  - [net] mptcp: fix possible stall on recvmsg()
    https://git.kernel.org/netdev/net/c/612f71d7328c

You are awesome, thank you!
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